Questions

Here the most stable carbocation is the option (2).

Carbocations are always hungry for electrons. The stability of carbocations increases from primary to secondary to tertiary. Here, option (c) shows the most stable carbocation because it can easily withdraw electrons from two other carbon atoms and the more electronegative oxygen atom.

Carbocation stability depends on hyperconjugation. The tertiary carbocation is stabilized by electron releasing inductive effect.

The Contingency Fund of India was constituted in 1950, by an act of parliament (Article 267). The Fund has been placed at the disposal of the president, who can make advances out of the Fund to meet unforeseen expenditure. The expenses must be subsequently authorised by Union Parliament (Articles 115, 116) and recovered through additional, supplementary or excess grants.

Nitrous acid act as an oxidising agent because it oxidises potassium iodide to iodine. It is also a reducing agent because it decolourises acidified potassium permanganate solution.

Nitric acid acts only as an oxidising agent

Ammonia acts only as a reducing agent

Nitrogen peroxide acts only as an oxidising agent.